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test/runtime/Metaspace/FragmentMetaspace.java

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*** 1,7 **** /* ! * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. --- 1,7 ---- /* ! * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.
*** 23,33 **** /** * @test * @library /runtime/testlibrary * @build GeneratedClassLoader ! * @run main/othervm/timeout=200 FragmentMetaspace */ import java.io.IOException; /** --- 23,33 ---- /** * @test * @library /runtime/testlibrary * @build GeneratedClassLoader ! * @run main/othervm/timeout=200 -Xmx300m FragmentMetaspace */ import java.io.IOException; /**
*** 36,64 **** * iteration. By increasing the size of the class meta data needed for every iteration * we stress the subsystem for allocating native memory for meta data. */ public class FragmentMetaspace { public static void main(String... args) { ! runGrowing(Long.valueOf(System.getProperty("time", "80000"))); // try to clean up and unload classes to decrease // class verification time in debug vm System.gc(); } ! private static void runGrowing(long time) { long startTime = System.currentTimeMillis(); ! for (int i = 0; System.currentTimeMillis() < startTime + time; ++i) { try { GeneratedClassLoader gcl = new GeneratedClassLoader(); ! Class<?> c = gcl.getGeneratedClasses(i, 100)[0]; c.newInstance(); c = null; gcl = null; ! } catch (IOException|InstantiationException|IllegalAccessException ex) { throw new RuntimeException(ex); } } } } --- 36,73 ---- * iteration. By increasing the size of the class meta data needed for every iteration * we stress the subsystem for allocating native memory for meta data. */ public class FragmentMetaspace { + public static Class<?> c; + public static void main(String... args) { ! runGrowing(Long.valueOf(System.getProperty("time", "80000")), ! Integer.valueOf(System.getProperty("iterations", "200"))); // try to clean up and unload classes to decrease // class verification time in debug vm System.gc(); } ! private static void runGrowing(long time, int iterations) { long startTime = System.currentTimeMillis(); ! for (int i = 0; System.currentTimeMillis() < startTime + time && i < iterations; ++i) { try { GeneratedClassLoader gcl = new GeneratedClassLoader(); ! // getGeneratedClasses throws a RuntimeException in cases where ! // the javac exit code is not 0. If the original reason for the exception is ! // a "java.lang.OutOfMemoryError: Java heap space", ! // increase the heap size in the @run tag and rerun the test. ! // The heap can be exhausted by this test, but heap exhaustion ! // is not a failure mode of this test and should be ignored. ! c = gcl.getGeneratedClasses(i, 100)[0]; c.newInstance(); c = null; gcl = null; ! } catch (IOException | InstantiationException | IllegalAccessException ex) { throw new RuntimeException(ex); } } } }
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